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Antimicrobial properties of MFe2O4 (M = Mn, Mg)/reduced graphene oxide composites synthesized via solvothermal method

El Hadji Mamour Sakho1, Jiya Jose2, Sabu Thomas3

  • 1School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam 686560, Kerala, India; International and Inter-University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686560, Kerala, India; Department of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa; Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg, South Africa.

Materials Science & Engineering. C, Materials for Biological Applications
|December 22, 2018
PubMed

Insights

Novel manganese ferrite (MnFe2O4) and magnesium ferrite (MgFe2O4) nanocomposites with reduced graphene oxide (RGO) show significant antibacterial activity against E. coli and S. aureus. The MnFe2O4/RGO exhibited superior performance due to its smaller particle size.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Biotechnology

Background:

  • Ferrite nanoparticles are explored for various applications, including antimicrobial agents.
  • Reduced graphene oxide (RGO) enhances the properties of composite materials.
  • Developing effective antimicrobial agents is crucial for public health.

Purpose of the Study:

  • To synthesize MFe2O4 (M = Mn, Mg)/RGO nanocomposites.
  • To investigate the structural, morphological, and antimicrobial properties of the synthesized materials.
  • To compare the antibacterial efficacy of MnFe2O4/RGO and MgFe2O4/RGO nanocomposites.

Main Methods:

  • Solvothermal synthesis using a pressure cooker.
  • Characterization using X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS).
  • Antimicrobial activity testing against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus).

Main Results:

  • Successfully synthesized MFe2O4/RGO nanocomposites.
  • Confirmed the structure and morphology of the materials.
  • Demonstrated significant antibacterial effects against both E. coli and S. aureus.
  • MnFe2O4/RGO showed enhanced antibacterial activity compared to MgFe2O4/RGO.

Conclusions:

  • MFe2O4/RGO nanocomposites are effective antimicrobial agents.
  • The pressure cooker-assisted solvothermal method is a viable route for synthesizing these materials.
  • Nanoparticle size plays a critical role in determining antibacterial efficacy, with smaller particles yielding better results.
Keywords:
AntimicrobialDecorationNanocompositeSpinel ferritesSynthesis

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